--- backend/src/cnij_backend_common.c   2010-02-23 04:57:49.000000000 +0100
+++ cnij_backend_common.c   2011-11-17 12:59:27.482025762 +0100
@@ -38,6 +38,7 @@
 // CUPS Header
 #include <cups/cups.h>
 #include <cups/ipp.h>
+#include <cups/ppd.h>
 
 // Header file for CANON
 #include "cnij_backend_common.h"
--- cngpij/cngpij/bjcups.c   2010-02-23 04:57:49.000000000 +0100
+++ bjcups.c   2011-11-17 12:59:27.482025762 +0100
@@ -21,6 +21,7 @@
 #include   <config.h>
 #endif   // HAVE_CONFIG_H
 
+#define _IPP_PRIVATE_STRUCTURES 1
 #include <cups/cups.h>
 #include <cups/language.h>
 #include <cups/ppd.h>
--- cngpijmon/src/bjcupsmon_cups.c   2010-02-23 04:57:49.000000000 +0100
+++ bjcupsmon_cups.c   2011-11-17 12:59:27.482025762 +0100
@@ -18,7 +18,9 @@
  */
 
 /*** Includes ***/
+#define _IPP_PRIVATE_STRUCTURES 1
 #include <cups/cups.h>
+#include <cups/ppd.h>
 #include <cups/language.h>
 #include <sys/types.h>
 #include <unistd.h>